MySQL Add new user and modify password method

Source: Internet
Author: User
Keywords Web programming MySQL Tutorial
Tags beginning delete directory example host modify password mysql mysql database

MySQL tutorial Add new user and modify password method

Format: Mysqladmin-u username-P Old password password new password

1, to root add a password ab12. First enter the directory Mysqlbin in DOS, and then type the following command:

Mysqladmin-uroot-password AB12

Note: Since Root does not have a password at the beginning, the-p old password can be omitted.

2, and then the root of the password changed to djg345.

MYSQLADMIN-UROOT-PAB12 Password djg345

Vii. Add new users. (Note: Unlike the above, the following are the commands in the MySQL environment, followed by a semicolon as the command Terminator)

Format: Grant Select on Database Tutorial. * To User name @ login host identified by "password"

Example 1, add a user test1 password for ABC, so that he can log on any host, and all databases have query, insert, modify, delete permissions. First connect the root user to MySQL, and then type the following command:

Grant Select,insert,update,

Delete on *.* to test1@ "%" identified by "ABC";

But for example 1 the increased user is very dangerous and you want someone who knows Test1 's password so that he can log on to your MySQL database on any computer on the Internet and can do whatever it wants with your data, as shown in Example 2.

Example 2, add a user test2 password for ABC, so that he can only log on the localhost, and can query the database mydb, insert, modify, delete operations (localhost refers to the local host, that is, the MySQL database of the host), This allows a user to use a password that knows test2, and he cannot access the database directly from the Internet, only through a Web page on the MySQL host.

Grant Select,insert,update,

Delete on mydb.* to test2@localhost identified by "ABC";

If you do not want to test2 the password, you can make another command to eliminate the password.

Grant Select,insert,update,delete on MyDB

. * To Test2@localhost identified by "";

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.